Artificial fuel.



UNITED STATES PATENT OFFICE.

HELEN M. VAN ETTEN, OF MORAVIA, NEW YORK.

ARTIFICIAL FUEL.

SPECIFICATION forming part Of Letters Patent N0. 646,650, dated April 3,1900. Application filed July 27, 1899- Serial No. 725,248. (Nospecimens.)

To (1% whom it may concern:

Be it known that I, HELEN M. VAN ETTEN, of Moravia, in the county ofCayuga, in the State of New York, have invented new and usefulImprovements in Artificial Fuel, of which the following is a full,clear, and exact description.

This invention relates to the'class of arti: fi'cial fuels in which coalreduced to very fine particles, commonly called dust, and a coarsergrade, usually termed slack, are utilized to serve as the base or mainconstit: uents of the composition forming the fuel.

The object of this invention is to obtain an artificial fuel fromcoal-dust and slack combined with materials which are inexpensive,readily incorporated in the composition, and materially contribute tothe heating capacity of the composition.

To that end the invention consists of a composition for artificial fuel,comprising coaldust, slack, an alkali-makers waste, and alum, allcombined with the aid of water in the manner and proportions hereinafterspecified. The chief alkali-makers waste which I desire to use is awaste substance which results from the manufacture of soda-ash.

In practicing my invention with dust and slack of different kinds ofcoal I have found it expedient to modify to some extent the proportionsof the ingredients used, but generally combine them in the proportionsas follows to produce approximately a ton of fuel:

coal-dust, nine hundred and forty-seven and one-half pounds; slack, ninehundred and forty-seven and one-half pounds; alkali-mak= ers waste, onehundred pounds; alum, five pounds, and water sufficientto make a'wetmass. In mixing the ingredients I proceed as follows: I first mix thealkali-makers waste with sufficiently-warm water to dissolve the sameinto a milky state in any suitable re ceptacle, and while warm I addthereto the alum, which has been previously dissolved in warm water, andthen stir the mixture, so as to cause the alum to become thoroughlyincorporated. This mixture is then added to the coal-dust and slack andthe whole agitated to eifectually commingle the ingredi- HELEN M. VANETTEN. n s.]

Witnesses;

J. J. LAASS, H. B. SMITH.

